Draw a circle in WPF using min(width, height)/2 as radius

Question

How I can draw a circle in WPF (without code-behind) using min(width, height)/2 as radius?

Answer 1

you can do it in pure XAML you just need to use Binding for the values. You also have to make sure that everything is named

  <Grid Name="grdMain"> 
      <Grid.ColumnDefinitions>
         <ColumnDefinition Width="75" Name="Col1" />
         <ColumnDefinition Width="100" Name="Col2" />
      </Grid.ColumnDefinitions>
      <Grid.RowDefinitions>
          <RowDefinition Height="75" Name="Row1" />
                <RowDefinition Height="100" Name="Row2" />
      </Grid.RowDefinitions>

           <Ellipse Grid.Column="1" Grid.Row="1"
                Canvas.Top="50"
                Canvas.Left="50"
                Fill="#FFFFFF00"
                Height="{Binding RowDefinitions/ActualHeight, ElementName=Row1, Mode=OneWay}"
                Width="{Binding ColumnDefinitions/ActualWidth, ElementName=Col1, Mode=OneWay}"
                StrokeThickness="5"
                Stroke="#FF0000FF"/>
   </Grid>